Powerflex PFR5-5630-12 Rear Shock/Strut Top Mount Polybush Kit 12mm Stud Pin - BMW E46 3 Series Compact 316ti 318ti Hatchback

Rear Strut Upper Mount Polyurethane Bush Kit - 12 mm Stud - BMW 3 Series E46 Compact - PFR5-5630-12

Upgrade the rear end of your BMW E46 Compact hatchback with a tough, precision engineered polyurethane upper damper mount bush kit. This Powerflex solution replaces tired factory rubber with a performance focused compound that controls suspension movement, tightens up the back of the car and boosts confidence on fast road and track.

Ideal for enthusiasts who want crisper response from their E46 Compact 316ti or 318ti without sacrificing road manners. Reduced deflection means steadier geometry, better tyre contact and improved stability under braking and cornering. We run these bushes on our own builds at MJ Modifications and customer feedback has been consistently positive for driveability and control.

Key details

• Part number: PFR5-5630-12
• Location: Rear shock absorber upper mount on the E46 Compact
• Stud size: 12 mm aftermarket damper pin
• Pack contents: 2 bushes - left and right
• Diagram reference: 30
• Exclusions: Not suitable for E36 or E46 Cabriolet models
• OE cross references: 33521092362, 33526779670

Why this upgrade works

• Sharper rear axle response for more direct steering feel
• Improved braking stability and traction when pushing on
• Holds alignment under load for more even tyre wear
• Durable polyurethane resists ageing, oil and heat far better than rubber
• Well controlled NVH for daily use yet strong enough for track days
• Excellent long term value with a Lifetime Warranty from the manufacturer

Pin size guide - choose the correct kit

This kit suits rear dampers that use a 12 mm upper stud. Always measure your shock’s upper pin before ordering. If your shock uses a 10 mm stud, choose PFR5-5630-10 instead.

• Original BMW - 10 mm
• AST - 10 mm
• Bilstein HD, Sport, PSS Coilovers - 10 mm
• FK Coilovers - 10 mm
• H and R Coilovers - 10 mm
• JRZ RS - 12 mm
• Koni Sport - 10 mm
• KW V1, V2, V3 - 10 mm
• ST Coilovers - 10 mm
• Tein Coilovers - 12 mm

If your brand is not listed, simply measure the outer diameter of the damper’s upper stud to confirm whether you need 12 mm or 10 mm.

What you will feel on the road

Replacing soft or perished factory bushes with this uprated kit removes the vague, floaty sensation at the rear. Expect a more planted feel over bumps, cleaner turn in, and confidence inspiring rear end control without harshness.

Professional fitting

We recommend professional installation and a post fit alignment for the best results. MJ Modifications offers fitting at our Warwickshire workshop. Request a quote at info@mjmodifications.co.uk.

Search friendly terms

BMW E46 Compact rear strut mount bushes 12 mm, E46 316ti 318ti rear shock upper mount bush, polyurethane rear damper top hat bush kit, E46 Compact rear suspension bush upgrade, performance rear shock absorber mount bushing, BMW 3 Series E46 hatchback rear strut top mount, uprated rear damper mount bushes 12 mm stud, Powerflex PFR5-5630-12 bush kit, E46 Compact rear shock mount replacement, track day rear suspension bushes, fast road rear mount bushings, BMW E46 Compact rear shock upper bushing pair.